816432039 has 12 divisors (see below), whose sum is σ = 1182794496. Its totient is φ = 542670912.

The previous prime is 816432037. The next prime is 816432049. The reversal of 816432039 is 930234618.

816432039 is a `hidden beast` number, since 8 + 1 + 643 + 2 + 0 + 3 + 9 = 666.

816432039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 816432039 - 2¹ = 816432037 is a prime.

It is a super-2 number, since 2×816432039² = 1333122548611395042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 816431994 and 816432012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816432031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131559 + ... + 137624.

It is an arithmetic number, because the mean of its divisors is an integer number (98566208).

Almost surely, 2^816432039 is an apocalyptic number.

816432039 is a deficient number, since it is larger than the sum of its proper divisors (366362457).

816432039 is a wasteful number, since it uses less digits than its factorization.

816432039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269526 (or 269523 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 816432039 is about 28573.2749085575. The cubic root of 816432039 is about 934.6306371805.

The spelling of 816432039 in words is "eight hundred sixteen million, four hundred thirty-two thousand, thirty-nine".